CN116728653A - Self-heating die for rotationally curing fiber winding large-size section cylinder - Google Patents
Self-heating die for rotationally curing fiber winding large-size section cylinder Download PDFInfo
- Publication number
- CN116728653A CN116728653A CN202310585505.8A CN202310585505A CN116728653A CN 116728653 A CN116728653 A CN 116728653A CN 202310585505 A CN202310585505 A CN 202310585505A CN 116728653 A CN116728653 A CN 116728653A
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- die
- die body
- self
- heat conduction
- electric heating
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 32
- 239000000835 fiber Substances 0.000 title claims abstract description 9
- 238000004804 winding Methods 0.000 title claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims abstract description 35
- 238000005485 electric heating Methods 0.000 claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 238000007711 solidification Methods 0.000 claims description 8
- 230000008023 solidification Effects 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
- B29C33/026—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means in rolls, calenders or drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/30—Mounting, exchanging or centering
- B29C33/306—Exchangeable mould parts, e.g. cassette moulds, mould inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Abstract
The application provides a self-heating die for rotationally solidifying a fiber winding large-size section cylinder, which comprises a transmission mechanism, a supporting shaft, electric heating rods, a die body and a split wire hanging disc, wherein the die body comprises a cylindrical die, a cavity is formed in the die body, and a plurality of electric heating rods are uniformly arranged on the inner wall of the die body; the transmission mechanism is in transmission connection with the supporting shaft, the supporting shaft is in fastening connection with the die body, and the die body can perform rotary motion along the central axis direction; two split hanging wire coils are respectively arranged at two ends of the die body. The electric heating rod is detachable through the integral structure, so that the electric heating rod is convenient to replace and maintain; the electric heating rods are placed in the triangular heat conduction frames which are uniformly arranged in the inner circumference of the die body, and then the triangular heat conduction frames are used for transferring heat to the die body, so that the product with a large-size cross section is heated more uniformly, and the heating efficiency is high; the application has simple structure, convenient working mode, small investment and low energy consumption.
Description
Technical Field
The application relates to the technical field of composite material fiber winding forming, in particular to a self-heating die for rotary solidification of a fiber winding large-size section cylinder.
Background
In the curing and forming process of the high-performance resin matrix composite fiber winding product, uniform rotation and curing are generally adopted to ensure uniform glue content in the product. For large-sized products, curing equipment is often used in ovens and autoclaves. However, such devices generally have no rotating device and are large in equipment investment. In addition, the product with large cross section size is cured by an oven or an autoclave for long time, high energy consumption and difficulty in ensuring that each part of the product is heated uniformly.
The prior Chinese patent with publication number of CN206140768U discloses a heating die device for molding a polyurethane material air duct, which comprises a movable base frame, a fixed base, a fixed bracket, a fixed die, a movable die, a heating rod and a hollow shaft; the fixed base is provided with a motor mounting table, and the motor mounting table is fixedly provided with a motor; the motor is connected with the fixed die through a chain, and the fixed die is connected with the movable die through a hinge; the fixed die and the movable die are fixed to form a cylindrical die by adopting detachable check rings at two ends of the fixed die and the movable die; the upper part of the fixed support is fixed with a hollow shaft, a heating rod is arranged in the hollow shaft, and the right side of the hollow shaft is connected with an air inlet pipe; the left side of the hollow shaft is positioned at the center of a cylindrical die formed by the fixed die and the movable die, and the left side of the hollow shaft is provided with a vent hole.
But in the die, an electric heating rod is adopted to heat air first, and then the die is heated by high-temperature air. The heating rate of air conduction is slow (the air heat conduction coefficient is 0.023W/m is K) in a closed state, and the electric heating pipe in the die device is arranged in the middle hollow shaft, so that the heating rate is extremely low when the size of the section of the die is large (the distance between the die surface and the hollow shaft is large).
Accordingly, the inventors have recognized that it is desirable to provide a self-heating mold for spin-curing of a fiber-wound large-sized cross-section cylinder to solve the problems of spin-curing, low curing rate, and uniformity of mold temperature in the formation of a large-sized cross-section fiber-wound cylinder.
Disclosure of Invention
Aiming at the defects in the prior art, the application aims to provide a self-heating die for rotationally curing a fiber winding large-size cross-section cylinder.
The application provides a self-heating die for rotationally curing a fiber-wound large-size cross-section cylinder, which comprises the following components: the die comprises a transmission mechanism, a supporting shaft, electric heating rods, a die body and a split wire hanging disc, wherein the die body comprises a cylindrical die, a cavity is formed in the die body, and a plurality of the electric heating rods are uniformly arranged on the inner wall of the die body; the transmission mechanism is in transmission connection with the supporting shaft, the supporting shaft is in fastening connection with the die body, and the die body can perform rotary motion along the central axis direction; the two split hanging wire coils are respectively arranged at two ends of the die body.
Preferably, the die further comprises a support, the die body is horizontally placed, the bottom of the support is placed on a horizontal plane, two sides of the bottom of the support extend upwards to form a V-shaped groove support, and the support shaft is placed on the support through a bearing.
Preferably, the support shaft comprises a first support shaft and a second support shaft which are respectively arranged at two ends of the die body, and the first support shaft and the second support shaft are detachably connected with the die body through positioning pin screws.
Preferably, the transmission mechanism comprises a transmission shaft and a chain wheel, the chain wheel is in transmission connection with the motor, the chain wheel is in fastening connection with the transmission shaft through a key, and the transmission shaft is inserted into the first support shaft and is limited to rotate relatively in the circumferential direction through a positioning screw.
Preferably, the first support shaft, the second support shaft, the transmission shaft and the die body are coaxially arranged.
Preferably, the electric heating device further comprises a conductive slip ring, wherein the inner ring of the conductive slip ring is respectively connected with a plurality of electric heating rods through wires.
Preferably, the support is provided with a mounting frame, the outer ring of the conductive slip ring is fixedly arranged on the mounting frame, and the conductive slip ring is sleeved on the transmission shaft.
Preferably, any one of the electric heating rods is detachably mounted on the inner wall of the die body through a triangular heat conducting frame.
Preferably, the bottom of the triangular heat conducting frame is attached to the inner wall of the die body, and the triangular heat conducting frame and the central shaft of the die body are arranged in the same direction.
Preferably, the cross section of the triangular heat conduction frame is of a triangular structure, and the triangular heat conduction frame is made of metal with the heat conduction coefficient more than 100W/mK.
Compared with the prior art, the application has the following beneficial effects:
1. the electric heating rod is detachable through the integral structure, so that the electric heating rod is convenient to replace and maintain; the electric heating rods are placed in the triangular heat conduction frames which are uniformly arranged in the inner circumference of the die body, and then the triangular heat conduction frames are used for transferring heat to the die body, so that the product with a large-size cross section is heated more uniformly, and the heating efficiency is high; the application has simple structure, convenient working mode, small investment and low energy consumption.
2. According to the application, the electric heating rod is arranged in the triangular heat conduction frame, and then the triangular heat conduction frame is annularly and uniformly arranged in the inner cavity of the die body, wherein the wires of the electric heating rod are led out from two ends and are connected to the inner rings of the conductive slip rings, the outer rings of the conductive slip rings are arranged on the support, and when the die rotates, the wires are prevented from being knotted through the conductive slip rings.
3. According to the application, the electric heating rod is arranged in the inner hole of the triangular heat conduction frame 8 which is uniformly arranged along the inner cavity of the die by selecting the triangular heat conduction frame made of high heat conduction materials, the bottom of the triangular heat conduction frame is tightly attached to the die body, and the die is rapidly and uniformly heated by the triangular heat conduction frame 8.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of the overall structure of a self-heating mold for spin curing of a fiber-wound large-sized cross-section cylinder, embodying the present application;
fig. 2 is a schematic structural diagram of a triangular heat conducting stand according to the present application.
The figure shows:
support 1 bearing 2 drive shaft 3
First support shaft 6 of conductive slip ring 5 of chain wheel 4
Positioning pin screw 7 triangular heat conduction frame 8 electric heating rod 9
Second supporting shaft 11 split type wire hanging disc 12 of die body 10
Detailed Description
The present application will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present application, but are not intended to limit the application in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present application.
As shown in fig. 1, a self-heating mold for spin-curing a fiber-wound large-sized cross-section cylinder according to the present application includes: the die body 10 comprises a cylindrical die, a cavity is formed in the cylindrical die, and a plurality of electric heating rods 9 are uniformly arranged on the inner wall of the die body 10; the transmission mechanism is in transmission connection with a support shaft, the support shaft is in fastening connection with the die body 10, and the die body 10 can perform rotary motion along the central direction; two split hanging wire coils 12 are respectively arranged at two ends of the die body 10.
Compared with air heat conduction, the application has the advantages of higher heating speed (metal contact heat conduction, uniform heating of products, stable quality, low energy consumption, greatly shortened molding period, capability of effectively solving the problems of rotation solidification, low solidification rate, mold temperature uniformity and the like in the molding of the large-size cross-section fiber winding cylinder body, and the like.
The application also comprises a support 1, the mould body 10 is horizontally placed, the bottom of the support 1 is placed on a horizontal plane, two sides of the bottom extend upwards to form V-shaped groove supports, bearings 2 are symmetrically arranged in grooves of the two V-shaped groove supports, and a support shaft is placed on the support 1 through the bearings 2.
The support shaft includes a first support shaft 6 and a second support shaft 11 respectively provided at both ends of the mold body 10, and is placed on the bearing 2 of the bracket 1. Both the first support shaft 6 and the second support shaft 11 are connected and positioned with the die body 10 by the positioning pin screw 7 and are detachably connected, which contributes to the improvement of the efficiency of the disassembly and the assembly of the present application.
The transmission mechanism comprises a transmission shaft 3 and a chain wheel 4, the chain wheel 4 is in transmission connection with the motor, the chain wheel 4 is in key fastening connection with the transmission shaft 3, and the chain is driven by the motor to realize axial rotation. The first support shaft 6, the second support shaft 11, the transmission shaft 3 and the die body 10 are arranged on the same central shaft. The transmission shaft 3 is inserted into the first support shaft 6 and is restrained from relative rotation in the circumferential direction by a set screw, so that the first support shaft 6 can rotate with the rotation of the transmission shaft 3.
The application also comprises a conductive slip ring 5, wherein the inner ring of the conductive slip ring 5 is respectively connected with a plurality of electric heating rods 9 through wires. The support 1 is provided with a mounting frame, the outer ring of the conductive slip ring 5 is fixedly arranged on the mounting frame, and the conductive slip ring 5 is sleeved on the transmission shaft 3.
The first support shaft 6 and the second support shaft 11 are respectively placed on bearings 2 at two ends of the support 1, the transmission shaft 3 is connected with the first support shaft 6 through positioning pins, the chain wheel 4 is installed on the transmission shaft 3, and the motor drives the chain wheel 4 through a chain to realize integral rotation of the die.
As shown in fig. 2, any one of the electric heating rods 9 is detachably mounted on the inner wall of the die body 10 through the triangular heat conduction frame 8. The bottom of the triangular heat conduction frame 8 is attached to the inner wall of the die body 10, and the triangular heat conduction frame 8 and the central shaft of the die body 10 are arranged in the same direction. The triangular heat conduction frame 8 has a triangular cross section, and is made of a metal material with high heat conductivity, preferably a metal material with a heat conduction coefficient of more than 100W/m & ltK. The triangular heat conduction frame 8 is made of high heat conduction materials, the electric heating rod 9 is arranged in an inner hole of the triangular heat conduction frame 8 which is uniformly arranged along the inner cavity of the die, the bottom of the triangular heat conduction frame 8 is tightly attached to the die body 10, and the die is rapidly and uniformly heated through the triangular heat conduction frame 8.
The electric heating rod 9 is arranged inside the triangular heat conduction frame 8, and then the triangular heat conduction frame 8 is annularly and uniformly arranged in the inner cavity of the die body 10, wherein wires of the electric heating rod 9 are led out from two ends and connected to the inner ring of the conductive slip ring 5, and the outer ring of the conductive slip ring 5 is arranged on the support 1. When the mould rotates, the lead is prevented from knotting by the conductive slip ring 5.
The die structure is detachable, and the electric heating rod 9 is convenient to replace and maintain; the electric heating rod 9 is placed in the triangular heat conduction frames 8 which are circumferentially and uniformly arranged in the die body 10, and then the triangular heat conduction frames 8 are used for transferring heat to the die body 10. The heating mode is more uniform in heating and high in heating efficiency for products with large-size cross sections. In addition, compared with heating equipment such as an oven or an autoclave, the application has the characteristics of small investment, low energy consumption and the like.
In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
The foregoing describes specific embodiments of the present application. It is to be understood that the application is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the application. The embodiments of the application and the features of the embodiments may be combined with each other arbitrarily without conflict.
Claims (10)
1. A self-heating die for spin curing of a filament wound large size cross section cylinder, comprising: the die comprises a transmission mechanism, a supporting shaft, electric heating rods (9), a die body (10) and a split type wire hanging disc (12), wherein the die body (10) comprises a cylindrical die, a cavity is formed in the die body, and a plurality of the electric heating rods (9) are uniformly arranged on the inner wall of the die body (10);
the transmission mechanism is in transmission connection with the supporting shaft, the supporting shaft is in fastening connection with the die body (10), and the die body (10) can perform rotary motion along the central axis direction;
the two split hanging wire coils (12) are respectively arranged at two ends of the die body (10).
2. Self-heating mould for the spin curing of a fibre-wound large-size section cylinder according to claim 1, characterised in that it further comprises a support (1), said mould body (10) being placed horizontally, the bottom of said support (1) being placed on a horizontal plane, the two sides of the bottom of which extend upwards to form a V-shaped groove support, said support shaft being placed on said support (1) by means of a bearing (2).
3. Self-heating mould for the rotary solidification of fibre-wound large-size section cylinders according to claim 2, characterized in that the support shafts comprise a first support shaft (6) and a second support shaft (11) arranged at both ends of the mould body (10), respectively, both the first support shaft (6) and the second support shaft (11) being detachably connected to the mould body (10) by means of a set pin screw (7).
4. A self-heating mould for the rotary solidification of a fibre-wound large-size section cylinder according to claim 3, characterised in that the transmission mechanism comprises a transmission shaft (3) and a sprocket (4), the sprocket (4) being in transmission connection with a motor, the sprocket (4) being in a keyed connection with the transmission shaft (3), the transmission shaft (3) being inserted into the first support shaft (6) and being limited in relative rotation in the circumferential direction by means of a set screw.
5. Self-heating mould for the rotary solidification of fibre-wound large-size section cylinders according to claim 4, characterized in that the first support shaft (6), the second support shaft (11), the transmission shaft (3) and the mould body (10) are arranged concentrically.
6. Self-heating mould for the rotary solidification of fibre-wound large-size section cylinders according to claim 4, characterized in that it further comprises an electrically conductive slip ring (5), the inner ring of said electrically conductive slip ring (5) being connected to a plurality of said electrically heated bars (9) respectively by means of wires.
7. The self-heating die for rotationally curing a fiber winding large-size cross-section cylinder according to claim 6, wherein a mounting frame is arranged on the bracket (1), an outer ring of the conductive slip ring (5) is fixedly arranged on the mounting frame, and the conductive slip ring (5) is sleeved on the transmission shaft (3).
8. Self-heating mould for the rotary solidification of fibre-wound large-size section cylinders according to claim 1, characterized in that any one of said electric heating rods (9) is removably mounted on the inner wall of said mould body (10) by means of a triangular heat-conducting bracket (8).
9. The self-heating die for rotationally curing a fiber-wound large-size cross-section cylinder according to claim 8, wherein the bottom of the triangular heat conduction frame (8) is attached to the inner wall of the die body (10), and the triangular heat conduction frame (8) is arranged in the same direction as the central axis of the die body (10).
10. The self-heating die for rotationally curing a fiber-wrapped large-size cross-section cylinder according to claim 8, wherein the cross section of the triangular heat conduction frame (8) is of a triangular structure, and the triangular heat conduction frame is made of metal with a heat conduction coefficient of more than 100W/m & lt K.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310585505.8A CN116728653A (en) | 2023-05-23 | 2023-05-23 | Self-heating die for rotationally curing fiber winding large-size section cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310585505.8A CN116728653A (en) | 2023-05-23 | 2023-05-23 | Self-heating die for rotationally curing fiber winding large-size section cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116728653A true CN116728653A (en) | 2023-09-12 |
Family
ID=87914330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310585505.8A Pending CN116728653A (en) | 2023-05-23 | 2023-05-23 | Self-heating die for rotationally curing fiber winding large-size section cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116728653A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117885376A (en) * | 2024-03-15 | 2024-04-16 | 北京卫星制造厂有限公司 | Auxiliary tool for composite material packaging curing mold and application method |
-
2023
- 2023-05-23 CN CN202310585505.8A patent/CN116728653A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117885376A (en) * | 2024-03-15 | 2024-04-16 | 北京卫星制造厂有限公司 | Auxiliary tool for composite material packaging curing mold and application method |
| CN117885376B (en) * | 2024-03-15 | 2024-05-28 | 北京卫星制造厂有限公司 | Auxiliary tool for composite material packaging curing mold and application method |
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